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Oct 16th, 2019
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  1. --fråga 1
  2.  
  3. Select * from elevhistorik
  4.  
  5. Select elevnamn from elevhistorik where elevnamn like 'a%'
  6.  
  7. --fråga 2
  8.  
  9. Select * from elevhistorik
  10.  
  11. Select count(elev_id) from elevhistorik where årskurs=9 and termin ='VT17'
  12.  
  13. --fråga 3
  14.  
  15. Select * from betyg
  16.  
  17. select * from betyg where month(betygsatt_datum)=6 or month(betygsatt_datum)=12
  18.  
  19. --fråga 4
  20.  
  21. Select * from elevhistorik
  22.  
  23. select * from betyg
  24.  
  25. select * from elevhistorik
  26. RIGHT JOIN betyg
  27. on elevhistorik.elev_id=betyg.elev_id
  28. where elevnamn is null
  29.  
  30. --fråga 5
  31.  
  32. Select * from elevhistorik
  33.  
  34. Select * from betyg
  35.  
  36. select distinct elevnamn, personnr, kön from elevhistorik
  37. right join betyg
  38. on elevhistorik.elev_id=betyg.elev_id
  39. where ämne='Matematik' and betyg.termin='VT15' and betyg='F' and skola ='Davidshallskolan'
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